Fertilization in Amphibians
Internal Fertilization: Eggs fertilized within female reproductive tract.
- Independently derived in a few lineages of amphibians.
- Anurans: Ascaphus and few Eleutherodactylus
- Most salamanders _ Salamandroidea.
- Males produce a spermatophore.
- A proteinaceous base topped with a package of sperm.
- Female picks up spermatophore with her cloacal lips.